CN209487571U - Electrochemical energy storage device - Google Patents
Electrochemical energy storage device Download PDFInfo
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- CN209487571U CN209487571U CN201920325989.1U CN201920325989U CN209487571U CN 209487571 U CN209487571 U CN 209487571U CN 201920325989 U CN201920325989 U CN 201920325989U CN 209487571 U CN209487571 U CN 209487571U
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- electrochemical energy
- side wall
- enhancement layer
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- 238000012983 electrochemical energy storage Methods 0.000 title claims abstract description 66
- 229920002521 macromolecule Polymers 0.000 claims description 17
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- 230000001681 protective effect Effects 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
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- 238000004146 energy storage Methods 0.000 description 4
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- 238000010438 heat treatment Methods 0.000 description 3
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- 229920002635 polyurethane Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
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- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical group CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 229920000647 polyepoxide Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000004651 carbonic acid esters Chemical class 0.000 description 1
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- 235000010855 food raising agent Nutrition 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/197—Sealing members characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
This application discloses a kind of electrochemical energy storage devices, including shell, shell includes opposite the first side wall and second sidewall, and is equipped with the inner cavity to accommodate battery core, between the first side wall and second sidewall, at least one of the first side wall and second sidewall are provided with enhancement layer for inner cavity.According to the electrochemical energy storage device of the application; at least one of the first side wall and second sidewall are upper to be arranged enhancement layer; enhancement layer can promote the structural strength of shell; when electrochemical energy storage device falls or collides; enhancement layer has protective effect to shell; it is possible thereby to avoid that short circuit occurs in electrochemical energy storage device or electrolyte leaks, so as to promoting the safety and reliability of electrochemical energy storage device.
Description
Technical field
This application involves energy storage device fields, more particularly, to a kind of electrochemical energy storage device.
Background technique
In the related technology, electrochemical energy storage device (such as lithium battery) in use, when electrochemical energy storage device send out
When life is fallen or collides with, it is be easy to cause the cracking of the Pocket (packaging bag) of electrochemical energy storage device, influences electrochemical energy storage
The safety and reliability of device work.
Summary of the invention
The purpose of the application is to propose that a kind of electrochemical energy storage device, the electrochemical energy storage device have safety
Property height and highly reliable advantage.
According to the electrochemical energy storage device of the embodiment of the present application, including shell, the shell includes opposite the first side wall
And second sidewall, and it is equipped with the inner cavity to accommodate battery core, the inner cavity is between the first side wall and second sidewall, institute
It states at least one of the first side wall and the second sidewall and is provided with enhancement layer.
According to the electrochemical energy storage device of the embodiment of the present application, at least one of the first side wall and second sidewall are upper to be arranged
Enhancement layer, enhancement layer can promote the structural strength of shell, when electrochemical energy storage device falls or collides, enhancement layer
There is protective effect to shell, it is possible thereby to avoid that short circuit occurs in electrochemical energy storage device or electrolyte leaks, so as to
To promote the safety and reliability of electrochemical energy storage device.
According to some embodiments of the present application, the electrochemical energy storage device further includes battery core, the tab of the battery core from
The first side wall stretches out inner cavity, and the enhancement layer is set to the second sidewall.
In some embodiments of the present application, the enhancement layer is set to the table close to the inner cavity of the second sidewall
Face.
In some embodiments of the present application, the enhancement layer is set to the table far from the inner cavity of the second sidewall
Face.
In some embodiments of the present application, the enhancement layer is set to the table far from the inner cavity of the first side wall
Face.
In some embodiments of the present application, the shell has third side wall, the third side wall and described second side
Wall is adjacent, and the enhancement layer is set to the surface far from the inner cavity of the third side wall.
According to some embodiments of the present application, the enhancement layer is macromolecule layer.
According to some embodiments of the present application, the enhancement layer is gummed paper.
In some embodiments of the present application, the width of the battery core is L1, and the enhancement layer is in battery core width direction
Length is L2, wherein L2 >=0.5L1.
According to some embodiments of the present application, the electrochemical energy storage device is battery.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application one；
Fig. 2 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application two；
Fig. 3 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application three；
Fig. 4 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application four；
Fig. 5 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application five；
Fig. 6 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application six；
Fig. 7 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application seven；
Fig. 8 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application eight；
Fig. 9 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application nine；
Figure 10 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application ten；
Figure 11 is the structural schematic diagram according to the electrochemical energy storage device of the embodiment of the present application 11.
Appended drawing reference:
Electrochemical energy storage device 100, shell 1,
The first side wall 11, second sidewall 12, third side wall 13, inner cavity 14,
Enhancement layer 2, battery core 3, tab 31.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
Below with reference to the accompanying drawings electrochemical energy storage device 100 according to the embodiment of the present application is described.It is worth understanding, it is following
Description is merely illustrative, rather than to the concrete restriction of the application.
Embodiment one
As shown in Figure 1, electrochemical energy storage device 100 includes shell 1 and battery core 3, shell 1 includes the first side wall 11, second
Side wall 12 and third side wall 13, wherein the first side wall 11 and second sidewall 12 are opposite, third side wall 13 and 12 phase of second sidewall
Neighbour, shell 1 are equipped with the inner cavity 14 to accommodate battery core 3, and inner cavity 14 is between the first side wall 11 and second sidewall 12, the first side
At least one of wall 11 and second sidewall 12 are provided with enhancement layer 2.
Enhancement layer 2 can promote the structural strength of shell 1, when electrochemical energy storage device 100 falls or collides,
Enhancement layer 2 has protective effect to shell 1, it is possible thereby to which it is short-circuit or electrolyte to avoid electrochemical energy storage device 100 from occurring
It leaks, so as to promote the safety and reliability of electrochemical energy storage device 100.
In the related technology, when electrochemical energy storage device falls or hits, electrochemical energy storage device is received outer
The impact force in portion is easy to appear the cracking or breakage of shell, causes the leakage of electrolyte, while external impact force also may be used
It can cause to collide between internal electrolyte and shell and pole piece and shell, cause the breakage of shell, influence electrochemistry
The safety and reliability of energy storage device.And in this application, pass through at least one in the first side wall 11 and second sidewall 12
Person is provided with enhancement layer 2, can promote the structural strength of shell 1, so that the safety and reliability of electrochemical energy storage device 100
It gets a promotion.
As shown in Figure 1, enhancement layer 2 is set to the surface of the close inner cavity 14 of the first side wall 11.Thus, it is possible to promote the first side
The structural strength of 14 side of close inner cavity of wall 11 increases the ability that the first side wall 11 resists electrolyte impact.
As shown in Figure 1, the tab 31 of battery core 3 stretches out inner cavity 14 from the first side wall 11, enhancement layer 2 is set to second sidewall 12.
It is understood that enhancement layer 2 can promote the structural strength of second sidewall 12, can be cracked to avoid second sidewall 12.
In addition, enhancement layer 2 is located at second sidewall 12, the accommodation space for accommodating enhancement layer 2 is easier to design and manufacture, can be with
Reduce the cost of processing.Preferably, enhancement layer 2 is equipped with the through hole passed through for tab 31.
It should be noted that battery core 3 includes pole piece and diaphragm, pole piece includes cathode sheets and anode strip again, and diaphragm is located at yin
Between pole piece and anode strip, and it is made by way of winding or lamination.Specifically, battery core 3 during fabrication, can make first
It uses polyethylene porous membrane as substrate, and surface preparation is carried out to substrate at a certain temperature using raising agent, to increase base
The tension on material surface, then by electrodeless oxide (aluminium oxide, silica etc.) and organic polymer (Kynoar) solution,
The even surface for being coated on substrate, diaphragm is made.
Then, anode strip, cathode sheets and diaphragm are wound into naked battery core according to order, naked battery core and electrolyte are built-in with outside
In shell 1, electrolyte infiltrates naked battery core and forms battery core 3, finally by modes such as hot pressing, makes to generate bonding between pole piece and diaphragm
Power.
As shown in Figure 1, enhancement layer 2 is set to the surface of the close inner cavity 14 of second sidewall 12.It is understood that enhancement layer
2 can promote the structural strength of 14 side of close inner cavity of second sidewall 12, so that second sidewall 12 resists electrolyte impact
Ability gets a promotion, so that electrolyte be avoided to leak.
As shown in Figure 1, enhancement layer 2 is set to the surface of the separate inner cavity 14 of second sidewall 12.It is understood that enhancement layer
2 can promote the structural strength of the outer surface of second sidewall 12, increase the ability that second sidewall 12 resists external impact, avoid
Second sidewall 12 is cracked.
As shown in Figure 1, shell 1 has third side wall 13, third side wall 13 is adjacent with second sidewall 12, and enhancement layer 2 is set to
The surface of the separate inner cavity 14 of third side wall 13.Enhancement layer 2 has protective effect to the third side wall 13 of shell 1, by the
Enhancement layer 2 is arranged in the surface of the separate inner cavity 14 of three side walls 13, can to avoid there is leaking for electrolyte at third side wall 13, from
And it can further promote the safety and reliability of electrochemical energy storage device 100.
As shown in Figure 1, shell 1 includes the first side wall 11, second sidewall 12 and two third side walls 13,11 He of the first side wall
Second sidewall 12 is oppositely arranged, and two third side walls 13 are oppositely arranged, one end of the third side wall 13 in left side and the first side wall 11
One end connection, the other end of the third side wall 13 in left side connect with one end of second sidewall 12, the third side wall 13 on right side
One end is connect with the other end of the first side wall 11, and the other end of the third side wall 13 on right side and the other end of second sidewall 12 connect
It connects.
Wherein, the separate inner cavity 14 of the third side wall 13 on the surface and right side of the separate inner cavity 14 of the third side wall 13 in left side
Surface be provided with enhancement layer 2.
Embodiment two
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 2, the difference is that, the only surface of the close inner cavity 14 of the first side wall 11, the close inner cavity 14 of second sidewall 12
The surface of the separate inner cavity 14 of the third side wall 13 on the surface and right side of the separate inner cavity 14 of the third side wall 13 on surface, left side is set
There is enhancement layer 2.
Embodiment three
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 3, the difference is that, the only surface of the close inner cavity 14 of the first side wall 11, the close inner cavity 14 of second sidewall 12
Surface, second sidewall 12 separate inner cavity 14 surface and left side third side wall 13 separate inner cavity 14 surface be equipped with reinforce
Layer 2.
Example IV
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 4, the difference is that, the only surface of the close inner cavity 14 of the first side wall 11, the separate inner cavity 14 of the first side wall 11
Surface, second sidewall 12 close inner cavity 14 surface and second sidewall 12 separate inner cavity 14 surface be equipped with enhancement layer 2.
Wherein, it is equipped with enhancement layer 2 on the surface of the separate inner cavity 14 of the first side wall 11, the outer of the first side wall 11 can be promoted
The structural strength on surface increases the ability that the first side wall 11 resists external impact.
Embodiment five
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 5, the difference is that, the only surface of the close inner cavity 14 of the first side wall 11, the close inner cavity 14 of second sidewall 12
The surface of surface and the separate inner cavity 14 of second sidewall 12 is equipped with enhancement layer 2.
Embodiment six
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 6, the difference is that, the only close inner cavity 14 on the surface and second sidewall 12 of the close inner cavity 14 of the first side wall 11
Surface is equipped with enhancement layer 2.
Embodiment seven
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 7, the difference is that, only the surface of the separate inner cavity 14 of second sidewall 12 is equipped with enhancement layer 2.
Embodiment eight
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 8, the difference is that, only the surface of the separate inner cavity 14 of the first side wall 11 is equipped with enhancement layer 2.
Embodiment nine
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Fig. 9, the difference is that, the only third side wall 13 on the surface of the separate inner cavity 14 of the third side wall 13 in left side and right side
Surface far from inner cavity 14 is equipped with enhancement layer 2.
Embodiment ten
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Figure 10, the difference is that, only the surface of the close inner cavity 14 of second sidewall 12 is equipped with enhancement layer 2.
Embodiment 11
The present embodiment is roughly the same with the structure of embodiment one, wherein identical component uses identical appended drawing reference, such as
Shown in Figure 11, the difference is that, only the surface of the close inner cavity 14 of the first side wall 11 is equipped with enhancement layer 2.
It is worth understanding, in the description of this specification, reference term " one embodiment ", " is shown " some embodiments "
The description of meaning property embodiment ", " example ", " specific example " or " some examples " etc. means that the embodiment or example is combined to describe
Particular features, structures, materials, or characteristics be contained at least one embodiment or example of the application.In this specification
In, schematic expression of the above terms may not refer to the same embodiment or example.Moreover, the specific features of description,
Structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
In addition, above-described embodiment is merely illustrative, the electrochemical energy storage device 100 of the embodiment of the present application can be with
It has the feature that
According to some embodiments of the present application, enhancement layer 2 is macromolecule layer.The manufacturing process relative maturity of macromolecule layer,
Manufacturing cost is lower, and the chemical property of macromolecule layer is also relatively stable, is not easy by acid and alkali corrosion, and service life is longer.
Optionally, macromolecule layer can be ethylene-acetate multipolymer (EVA) hot melt adhesive, polyamide (PA) hot melt adhesive, poly- ammonia
Ester (PU) hot melt adhesive, polyurethane, epoxy resin, polyacrylate, polyureas or polycarbonate.Ethylene-acetate multipolymer (EVA) heat
Melten gel, polyamide (PA) hot melt adhesive, polyurethane (PU) hot melt adhesive, polyurethane, epoxy resin, polyacrylate, polyureas, poly- carbonic acid
Ester has stronger viscosity after physics is heated or chemical polymerization.Specifically, macromolecule layer can be one in above-mentioned material
Kind, it is also possible to the mixing of wherein different materials.
Wherein, physical heating method can be by heating and temperature control at 60-160 DEG C, it is preferable that heating temperature 80-100
DEG C, the response time can control in 1-30min, it is preferable that response time 1-4min.
In the related technology, pole of the electrochemical energy storage device when falling or hitting, inside electrochemical energy storage device
It is easy to happen opposite sliding between piece and causes internal short-circuit.In addition, the electrolyte of electrochemical energy storage device can also impact diaphragm,
The contraction for being easy to happen diaphragm causes internal short circuit.
As shown in Figure 1, smearing bonding on the surface of the close inner cavity 14 of the first side wall 11 in the example of the application
Glue can using the viscous force of above-mentioned macromolecule layer to form macromolecule layer on the surface of the close inner cavity 14 of the first side wall 11
To promote the integraty between pole piece, diaphragm and shell 1, internal short-circuit caused by preventing pole piece from mutually sliding and diaphragm retracts are made
At internal short-circuit, while shell 1 can also be avoided to be cracked.
As shown in fig. 7, being smeared on the surface of the close inner cavity 14 of second sidewall 12 viscous in another example of the application
Glue is connect, to form macromolecule layer on the surface of the close inner cavity 14 of second sidewall 12, utilizes the viscous force of above-mentioned macromolecule layer
The integraty between diaphragm and shell 1 can be promoted, prevents internal short-circuit caused by diaphragm retracts, while shell can also be avoided
1 is cracked.
In the related technology, electrochemical energy storage device further includes working bin, and shell is located in working bin, electrochemical energy storage device
It is easy to happen collision when falling or hitting, between shell and working bin, causes the crack failure of shell.
As shown in figure 3, smearing bonding on the surface of the separate inner cavity 14 of third side wall 13 in the example of the application
Glue can using the viscous force of above-mentioned macromolecule layer to form macromolecule layer on the surface of the separate inner cavity 14 of third side wall 13
To promote the integraty of shell 1 Yu working bin, caused by can preventing because of shell 1 and working bin collision the problem of the cracking of shell 1.
As shown in figure 8, being smeared on the surface of the separate inner cavity 14 of the first side wall 11 viscous in another example of the application
Glue is connect, to form macromolecule layer on the surface of the separate inner cavity 14 of the first side wall 11, utilizes the viscous force of above-mentioned macromolecule layer
The integraty of shell 1 Yu working bin can be promoted, what shell 1 was cracked caused by can preventing because of the collision of shell 1 and working bin asks
Topic.
As shown in Figure 10, it in another example of the application, is smeared on the surface of the separate inner cavity 14 of second sidewall 12
Bonded adhesives utilizes the viscosity of above-mentioned macromolecule layer to form macromolecule layer on the surface of the separate inner cavity 14 of second sidewall 12
Power can promote the integraty of shell 1 Yu working bin, and shell 1 is cracked caused by can preventing because of shell 1 and working bin collision
Problem.
According to some embodiments of the present application, enhancement layer 2 is gummed paper.Gummed paper has that structure is simple, is easily assembled and cost
Cheap advantage.Optionally, gummed paper can be one side glue paper or Double-face gummed paper.
In some embodiments of the present application, the width of battery core 3 is L1 (referring to Fig. 6 and Fig. 9), and enhancement layer 2 is wide in battery core 3
The length for spending direction is L2 (referring to Fig. 6 and Fig. 9), wherein L2 >=0.5L1.Thus, it is possible to promote enhancement layer 2 to the guarantor of shell 1
Effect is protected, the reliability and safety of electrochemical energy storage device 100 are further promoted.
For example, enhancement layer 23 width direction of battery core length L2 can be 0.6L1,0.7L1,0.8L1,0.9L1 or L1,
Specifically, enhancement layer 2 the length L2 of 3 width direction of battery core can be according to the model of battery core 3, size and the Environment Design of application
Manufacture.
According to some embodiments of the present application, electrochemical energy storage device 100 is battery.It is understood that battery has
It is easy to carry about with one and is easy to the advantages of transporting, while the application environment of battery is also relatively various, the demand of battery is also relatively extensive.It can
Selection of land, battery can be one-shot battery or secondary cell.Certain the application is without being limited thereto, and electrochemical appliance may be capacitor
Device.
It should be noted that battery core 3 with shell 1 after the assembly is completed, it is also necessary to pass through charging chemical conversion, negative pressure ventilation and appearance
Measuring the processes such as examination could complete to manufacture, and the shell 1 equipped with battery core 3 can be then put into working bin, to complete electrification
Learn the assembling of energy storage device 100.
By the storage of electrochemical energy storage device 100 and not set enhancement layer 2 in the related technology in the above-described embodiment of part
Energy device (comparative example one) is tested experiment.Realization condition is as follows: by the electrochemical energy storage device 100 in above-described embodiment
It is respectively put into roller and is tested with the energy storage device of not set enhancement layer 2 in the related technology, the revolving speed of roller is 3-4
Circle/min, rolling height is 1m, tests total 250 circle of rotation of roller every time, takes out when the 75th circle, 150 circles and 250 circle
Voltage and internal resistance are measured, the battery core static 72h of 3 room temperature is removed after falling, per surveying primary voltage for 24 hours and recording, with first after 72h
On the basis of beginning voltage, the voltage drop of electrochemical energy storage device 100 is less than the qualification of 30mv, while counting the ratio for cracking mouth occur
Example.
Specific experiment is as a result, as shown in table 1:
Experimental studies have found that enhancement layer 2, Ke Yixian is arranged in the side in the close inner cavity 14 of the first side wall 11 of shell 1
The percent of pass of the voltage drop of the promotion electrochemical energy storage device 100 of work；In the first side wall 11, second sidewall 12 or third side wall
Enhancement layer 2 is arranged in the side of 13 separate inner cavity 14, and ratio occurs in the cracking mouth that can significantly reduce electrochemical energy storage device 100
Example.
While there has been shown and described that embodiments herein, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle and objective of the application, this
The range of application is defined by the claims and their equivalents.
Claims (10)
1. a kind of electrochemical energy storage device, including shell, the shell includes opposite the first side wall and second sidewall, and is equipped with
To accommodate the inner cavity of battery core, the inner cavity is between the first side wall and second sidewall, which is characterized in that described first
At least one of side wall and the second sidewall are provided with enhancement layer.
2. electrochemical energy storage device according to claim 1, which is characterized in that it further include battery core, the tab of the battery core
Inner cavity is stretched out from the first side wall, the enhancement layer is set to the second sidewall.
3. electrochemical energy storage device according to claim 2, which is characterized in that the enhancement layer is set to the second sidewall
Close to the inner cavity surface.
4. electrochemical energy storage device according to claim 2, which is characterized in that the enhancement layer is set to the second sidewall
Far from the inner cavity surface.
5. according to the described in any item electrochemical energy storage devices of claim 2-4, which is characterized in that the enhancement layer is set to described
The surface far from the inner cavity of the first side wall.
6. according to the described in any item electrochemical energy storage devices of claim 2-4, which is characterized in that the shell has third side
Wall, the third side wall is adjacent with the second sidewall,
The enhancement layer is set to the surface far from the inner cavity of the third side wall.
7. electrochemical energy storage device according to claim 1, which is characterized in that the enhancement layer is macromolecule layer.
8. electrochemical energy storage device according to claim 1, which is characterized in that the enhancement layer is gummed paper.
9. electrochemical energy storage device according to claim 2, which is characterized in that the width of the battery core is L1, described to add
Strong layer is L2 in the length of battery core width direction, wherein L2 >=0.5L1.
10. electrochemical energy storage device according to claim 1, which is characterized in that the electrochemical energy storage device is battery.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325989.1U CN209487571U (en) | 2019-03-14 | 2019-03-14 | Electrochemical energy storage device |
| US16/955,248 US20210218093A1 (en) | 2019-03-14 | 2020-03-12 | Electrochemical energy storage device |
| EP20712430.6A EP3731327A4 (en) | 2019-03-14 | 2020-03-12 | Electrochemical energy storage device |
| PCT/CN2020/079031 WO2020182191A1 (en) | 2019-03-14 | 2020-03-12 | Electrochemical energy storage device |
| JP2020517481A JP2021518032A (en) | 2019-03-14 | 2020-03-12 | Electrochemical energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920325989.1U CN209487571U (en) | 2019-03-14 | 2019-03-14 | Electrochemical energy storage device |
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| CN209487571U true CN209487571U (en) | 2019-10-11 |
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| CN201920325989.1U Active CN209487571U (en) | 2019-03-14 | 2019-03-14 | Electrochemical energy storage device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20210218093A1 (en) |
| EP (1) | EP3731327A4 (en) |
| JP (1) | JP2021518032A (en) |
| CN (1) | CN209487571U (en) |
| WO (1) | WO2020182191A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020182191A1 (en) * | 2019-03-14 | 2020-09-17 | 宁德新能源科技有限公司 | Electrochemical energy storage device |
| CN113097609A (en) * | 2021-03-30 | 2021-07-09 | 东莞新能安科技有限公司 | Electrochemical device and electronic device using the same |
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| JP2003109667A (en) * | 2001-09-28 | 2003-04-11 | Mitsubishi Electric Corp | Nonaqueous electrolyte battery and its manufacturing method |
| KR100614373B1 (en) * | 2004-09-24 | 2006-08-21 | 삼성에스디아이 주식회사 | Lithium polymer battery having reinforcement layer and its manufacturing method |
| JP4793497B2 (en) * | 2010-03-12 | 2011-10-12 | ソニー株式会社 | Battery pack |
| CN102170019B (en) * | 2011-03-31 | 2017-02-08 | 东莞新能源电子科技有限公司 | Flexible packaging lithium ion battery |
| JP5973765B2 (en) * | 2012-03-30 | 2016-08-23 | 積水化成品工業株式会社 | Interior materials for transport aircraft and installation methods for interior materials |
| WO2015080306A1 (en) * | 2013-11-27 | 2015-06-04 | 주식회사 엘지화학 | Pouch for secondary battery and secondary battery comprising same |
| KR102248598B1 (en) * | 2014-02-05 | 2021-05-06 | 삼성에스디아이 주식회사 | Curved secondary battery and manufacturing method thereof |
| JP6109792B2 (en) * | 2014-08-06 | 2017-04-05 | 本田技研工業株式会社 | Battery pack and electric vehicle |
| US20190094150A1 (en) * | 2014-11-18 | 2019-03-28 | Mitsubishi Chemical Corporation | Method for mending metallic plate and method for manufacturing mold |
| KR101883536B1 (en) * | 2015-04-29 | 2018-07-30 | 주식회사 엘지화학 | Pouch type secondary battery and method of fabricating the same |
| CN107112470B (en) * | 2015-05-12 | 2020-04-03 | 奥林巴斯株式会社 | Battery pack for medical device and medical device unit |
| US10326170B2 (en) * | 2015-06-03 | 2019-06-18 | Ningde Amperex Technology Limited | Electrochemical energy storage device |
| CN205050949U (en) * | 2015-10-20 | 2016-02-24 | 山东精工电子科技有限公司 | Lithium ion battery |
| CN205122651U (en) * | 2015-11-02 | 2016-03-30 | 宁德新能源科技有限公司 | Soft -packed lithium ion battery |
| JP2017222314A (en) * | 2016-06-17 | 2017-12-21 | 株式会社フジクラ | On-vehicle battery |
| CN108807809A (en) * | 2017-05-04 | 2018-11-13 | 宁德新能源科技有限公司 | Battery core and energy storage device |
| CN207705280U (en) * | 2017-07-29 | 2018-08-07 | 深圳格林德能源有限公司 | A kind of fire-retardant flexible packaging power battery structure |
| CN209487571U (en) * | 2019-03-14 | 2019-10-11 | 宁德新能源科技有限公司 | Electrochemical energy storage device |
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2019
- 2019-03-14 CN CN201920325989.1U patent/CN209487571U/en active Active
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2020
- 2020-03-12 WO PCT/CN2020/079031 patent/WO2020182191A1/en unknown
- 2020-03-12 US US16/955,248 patent/US20210218093A1/en active Pending
- 2020-03-12 EP EP20712430.6A patent/EP3731327A4/en active Pending
- 2020-03-12 JP JP2020517481A patent/JP2021518032A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020182191A1 (en) * | 2019-03-14 | 2020-09-17 | 宁德新能源科技有限公司 | Electrochemical energy storage device |
| CN113097609A (en) * | 2021-03-30 | 2021-07-09 | 东莞新能安科技有限公司 | Electrochemical device and electronic device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3731327A4 (en) | 2021-04-21 |
| EP3731327A1 (en) | 2020-10-28 |
| US20210218093A1 (en) | 2021-07-15 |
| JP2021518032A (en) | 2021-07-29 |
| WO2020182191A1 (en) | 2020-09-17 |
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